Why is the rain essential for Earth?

Why is rain essential for Earth? Answer: If it doesn't rain then Earth will remain parched, droughts will follow and the dust-layers will not be washed away. There will be nothing to quench the thirst of the plants and trees and their seeds will die.

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Regarding this, can rain be harmful for living things explain?

Rain is very important for life. All living things need water to live, even people. Rain brings us the water we need. Because of pollution in the air, acid gases from factories, cars and homes, the rain is becoming dangerous for the life of every living creature. Is there a place on Earth where it never stops raining? Is there a place on earth where it never stops raining? The Atacama Desert (Spanish: Desierto de Atacama) is a plateau in South America, covering a 1,000-kilometre (600 mi) strip of land on the Pacific coast, west of the Andes mountains. It is the driest non-polar desert in the world.

Keeping this in consideration, what would happen if it rained for 40 days straight?

The sea level would, unsurprisingly, not change because the total water on Earth would stay the same. And the rain would be reduced to a drizzle for almost all the time because only so much solar energy can get to the oceans to evaporate more water to keep supplying the clouds. What would happen if it never rained? Nearly 577,060 cubic meters of water evaporates from the earth's surface every year! Without rain to replenish this water, our rivers and oceans would start to dry, until there is no water left. Without oceans and rivers, marine life would cease to exist. At this point, humans will have nothing to eat.

How does the shower fall?

Answer: The rain goes on completing a fixed cycle day in and day out. She rises in the form of water vapors out of the land and bottomless sea. She rises towards where when she cools down she takes the shape of showers. Consequently, does rain make air quality better? Rain might ruin a picnic, but when it comes to air pollution, it can actually be a really good thing. This is because, on rainy days, most of the common air pollutants and pollen in the air are washed away, helping to increase the quality of the air. This phenomenon is called Wet deposition.